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Mirrors > Home > ILE Home > Th. List > znnen | Unicode version |
Description: The set of integers and the set of positive integers are equinumerous. Exercise 1 of [Gleason] p. 140. (Contributed by NM, 31-Jul-2004.) |
Ref | Expression |
---|---|
znnen |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | unrab 3251 |
. . 3
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2 | nnssz 8501 |
. . . . . 6
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3 | dfss1 3186 |
. . . . . 6
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4 | 2, 3 | mpbi 143 |
. . . . 5
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5 | dfin5 2989 |
. . . . 5
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6 | 4, 5 | eqtr3i 2105 |
. . . 4
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7 | 6 | uneq1i 3132 |
. . 3
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8 | rabid2 2535 |
. . . 4
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9 | elznn 8500 |
. . . . 5
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10 | 9 | simprbi 269 |
. . . 4
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11 | 8, 10 | mprgbir 2426 |
. . 3
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12 | 1, 7, 11 | 3eqtr4ri 2114 |
. 2
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13 | nnex 8164 |
. . . 4
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14 | 13 | enref 6333 |
. . 3
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15 | zex 8493 |
. . . . . 6
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16 | 15 | rabex 3942 |
. . . . 5
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17 | nn0ex 8413 |
. . . . 5
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18 | negeq 7420 |
. . . . . . . 8
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19 | 18 | eleq1d 2151 |
. . . . . . 7
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20 | 19 | elrab 2757 |
. . . . . 6
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21 | 20 | simprbi 269 |
. . . . 5
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22 | nn0negz 8518 |
. . . . . 6
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23 | nn0cn 8417 |
. . . . . . . . 9
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24 | 23 | negnegd 7529 |
. . . . . . . 8
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25 | 24 | eleq1d 2151 |
. . . . . . 7
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26 | 25 | ibir 175 |
. . . . . 6
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27 | negeq 7420 |
. . . . . . . 8
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28 | 27 | eleq1d 2151 |
. . . . . . 7
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29 | 28 | elrab 2757 |
. . . . . 6
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30 | 22, 26, 29 | sylanbrc 408 |
. . . . 5
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31 | elrabi 2754 |
. . . . . . . 8
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32 | 31 | adantr 270 |
. . . . . . 7
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33 | 32 | zcnd 8603 |
. . . . . 6
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34 | 23 | adantl 271 |
. . . . . 6
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35 | negcon2 7480 |
. . . . . 6
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36 | 33, 34, 35 | syl2anc 403 |
. . . . 5
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37 | 16, 17, 21, 30, 36 | en3i 6339 |
. . . 4
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38 | nn0ennn 9567 |
. . . 4
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39 | 37, 38 | entri 6354 |
. . 3
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40 | inrab2 3253 |
. . . 4
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41 | incom 3174 |
. . . 4
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42 | rabeq0 3290 |
. . . . 5
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43 | 0red 7234 |
. . . . . . . 8
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44 | simpl 107 |
. . . . . . . . 9
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45 | 44 | nnred 8171 |
. . . . . . . 8
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46 | nngt0 8183 |
. . . . . . . . 9
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47 | 46 | adantr 270 |
. . . . . . . 8
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48 | nn0ge0 8432 |
. . . . . . . . . 10
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49 | 48 | adantl 271 |
. . . . . . . . 9
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50 | 45 | le0neg1d 7737 |
. . . . . . . . 9
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51 | 49, 50 | mpbird 165 |
. . . . . . . 8
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52 | 43, 45, 43, 47, 51 | ltletrd 7646 |
. . . . . . 7
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53 | 43 | ltnrd 7341 |
. . . . . . 7
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54 | 52, 53 | pm2.65da 620 |
. . . . . 6
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55 | 54, 4 | eleq2s 2177 |
. . . . 5
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56 | 42, 55 | mprgbir 2426 |
. . . 4
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57 | 40, 41, 56 | 3eqtr3i 2111 |
. . 3
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58 | unennn 10817 |
. . 3
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59 | 14, 39, 57, 58 | mp3an 1269 |
. 2
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60 | 12, 59 | eqbrtri 3824 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 577 ax-in2 578 ax-io 663 ax-5 1377 ax-7 1378 ax-gen 1379 ax-ie1 1423 ax-ie2 1424 ax-8 1436 ax-10 1437 ax-11 1438 ax-i12 1439 ax-bndl 1440 ax-4 1441 ax-13 1445 ax-14 1446 ax-17 1460 ax-i9 1464 ax-ial 1468 ax-i5r 1469 ax-ext 2065 ax-sep 3916 ax-pow 3968 ax-pr 3992 ax-un 4216 ax-setind 4308 ax-cnex 7181 ax-resscn 7182 ax-1cn 7183 ax-1re 7184 ax-icn 7185 ax-addcl 7186 ax-addrcl 7187 ax-mulcl 7188 ax-mulrcl 7189 ax-addcom 7190 ax-mulcom 7191 ax-addass 7192 ax-mulass 7193 ax-distr 7194 ax-i2m1 7195 ax-0lt1 7196 ax-1rid 7197 ax-0id 7198 ax-rnegex 7199 ax-precex 7200 ax-cnre 7201 ax-pre-ltirr 7202 ax-pre-ltwlin 7203 ax-pre-lttrn 7204 ax-pre-apti 7205 ax-pre-ltadd 7206 ax-pre-mulgt0 7207 ax-pre-mulext 7208 ax-arch 7209 |
This theorem depends on definitions: df-bi 115 df-dc 777 df-3or 921 df-3an 922 df-tru 1288 df-fal 1291 df-xor 1308 df-nf 1391 df-sb 1688 df-eu 1946 df-mo 1947 df-clab 2070 df-cleq 2076 df-clel 2079 df-nfc 2212 df-ne 2250 df-nel 2345 df-ral 2358 df-rex 2359 df-reu 2360 df-rmo 2361 df-rab 2362 df-v 2612 df-sbc 2825 df-csb 2918 df-dif 2984 df-un 2986 df-in 2988 df-ss 2995 df-nul 3268 df-pw 3402 df-sn 3422 df-pr 3423 df-op 3425 df-uni 3622 df-int 3657 df-iun 3700 df-br 3806 df-opab 3860 df-mpt 3861 df-id 4076 df-po 4079 df-iso 4080 df-xp 4397 df-rel 4398 df-cnv 4399 df-co 4400 df-dm 4401 df-rn 4402 df-res 4403 df-ima 4404 df-iota 4917 df-fun 4954 df-fn 4955 df-f 4956 df-f1 4957 df-fo 4958 df-f1o 4959 df-fv 4960 df-riota 5519 df-ov 5566 df-oprab 5567 df-mpt2 5568 df-1st 5818 df-2nd 5819 df-er 6193 df-en 6309 df-pnf 7269 df-mnf 7270 df-xr 7271 df-ltxr 7272 df-le 7273 df-sub 7400 df-neg 7401 df-reap 7794 df-ap 7801 df-div 7880 df-inn 8159 df-2 8217 df-n0 8408 df-z 8485 df-q 8838 df-rp 8868 df-fl 9404 df-mod 9457 df-dvds 10404 |
This theorem is referenced by: (None) |
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